The Samsung 860 EVO is the successor to the Samsung 850 EVO. The 860 EVO series is powered by 64-layer 3D V-NAND technology and comes with an updated Samsung MJX controller. This makes the drive up to 25% more energy-efficient than the previous EVO 850 series. Speeds are more consistent, even with heavy workloads and multi-tasks. The 860 EVO performs at sequential writes up to 520 MB/s with Intelligent TurboWrite technology, and sequential reads up to 550 MB/s. The TurboWrite buffer size is upgraded to 22 GB for faster file transfer. The latest V-NAND technology gives you up to 300 TBW (Terabytes Written), or is backed by a 5-year limited warranty.